Reddit mentions of DEWALT Step Drill Bit, Impact Ready, 1/8-Inch-1/2-Inch (DWA1783IR)

Bastard files with remove the most metal of all other file grinds.

I got started making knives several years back using a hand jig inspired by Aaron Gough.

Here's a link:

https://www.youtube.com/watch?v=r9iNDRwwBQQ

You can find several more youtube video's on the subject.

Your design looks pretty good, I would recommend doing one blade from start to finish until you perfect your process. 6 mm stock is pretty thick so you might want to skeletonize the handle a bit to better balance the blade and reduce weight. Here is a link to an example:

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https://www.knifecenter.com/item/WTWRATK/white-river-knives-owen-baker-jr-atk-always-there-knife-s35vn-stonewashed-blade-skeletonized-handle-kydex-sheath

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be careful not to take out too much material just behind where the knife meets the handle, this can create a weak point if you decide to baton with the knife.

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I would get a step of bit for drilling pin holes and skeletonize the knife, I like this one. https://www.amazon.com/DEWALT-DWA1783IR-8-Inch-1-2-Inch-IMPACT/dp/B0090IHBL4/ref=sxts_sxwds-bia?gclid=Cj0KCQiAn8nuBRCzARIsAJcdIfNba4wvdHAT8G-Xw7-192SSo25KbGIIFRTaciL4vTm_fm1Ye7TqVvoaAignEALw_wcB&hvadid=153692517255&hvdev=c&hvlocphy=9031951&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=1119223531089504081&hvtargid=aud-837686656069%3Akwd-6841401801&hydadcr=1611_9512018&keywords=dewalt+step+bit&pd_rd_i=B0090IHBL4&pd_rd_r=3301b045-680f-4746-bf0c-1409a9698aae&pd_rd_w=U7oJ6&pd_rd_wg=l4rot&pf_rd_p=1cb3f32a-ccfd-479b-8a13-b22f56c942c6&pf_rd_r=HW4NWM70PNESNP2QKEG0&psc=1&qid=1574091165

So much easier to make holes than a typical drill bit, even if you use a carbide drill bit.

Also make sure you make all of your holes and rough grind the bevels before you heat treat, as once hard, removing or drilling metal will be tough. Also keep the edge of the blade at least 0.4 mm or so at the edge before you heat treat, if you grind it too think, the blade will warp.

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Good luck!